VIN mystery

Fellow VIN experts,
I have a bit of a mystery here with my newly-purchased 200TQ. It's
of no big significance, but the VIN appears to indicate that it's a
'92 model year car:
WAUGE5446MN026960
^
According to my '84-'88 Bentley, character #10 indicates model year, with
H being 1987 (confirmed by an F in the same position on my '85 5KT). So,
H: 1987
I: 1988
J: 1989
K: 1990
L: 1991
M: 1992 ??
What's the deal here? The car was sold in March '92 as a '91 model, which
means that their VIN system is even more screwed up than I thought.
-Arun
--
Arun Rao
Scientist
Pixar
1001 W. Cutting Blvd.
Pt. Richmond, CA 94804
(510)215-3526